True hermaphrodite is a misnomer, a term for an intersex disorder known as ovotesticular syndrome[0]. To quote the great Wikipedia:
> In the past, ovotesticular syndrome was referred to as true hermaphroditism, which is considered outdated as of 2006. The term "true hermaphroditism" was considered very misleading by many medical organizations and by many advocacy groups, as hermaphroditism refers to a species that produces both sperm and ova, something that is impossible in humans.
To check, we can apply "our" quote - a hermaphrodite would either be sequential, which we know humans are not (I hope we know that much), or able to produce both types of gametes at the same time.
True hermaphrodites cannot do that, and the paper you shared makes no claim that they can or that they have. None of the examples show that either.
Your claim is false.
> Not all humans reproduce.
I'm sorry, but you're bringing the conversation down to a level too silly to bother with there. Every human has a reproductive strategy, and from conception to boot. Whether any individual actual reproduces is irrelevant to that.
Really, that kind of argument is beneath the level of this forum.
Most humans are not, sure. Some are: https://link.springer.com/article/10.1007/BF02000779
Your claim is falsified.
> And only one reproduction strategy, which is why there are no human hermaphrodites,
Not all humans reproduce. Yes, there are only two reproductive genders, these do not cover all humans.
There are several strategies to identify gender, as we both (I hope) know, each has its edge cases, none is sufficient.
A laser like focus on sex-as-gamete-production (SAG) is completely adrift from social reality.
> It was an accurate observation, which you have only gone on to prove further.
Your attitude says more about you, the lack of self reflection most of all.